:_mod-docs-content-type: ASSEMBLY [id="api-server-certificates"] = Adding API server certificates include::_attributes/common-attributes.adoc[] :context: api-server-certificates toc::[] The default API server certificate is issued by an internal {product-title} cluster CA. Clients outside of the cluster will not be able to verify the API server's certificate by default. This certificate can be replaced by one that is issued by a CA that clients trust. include::modules/customize-certificates-api-add-named.adoc[leveloffset=+1]